Write to Us
513.354.1482
Mammoth Gray Stripe Sunflower
Huge flowers provide a yummy snack
Mammoth Gray Stripe Sunflower
Huge flowers provide a yummy snack
- Huge, 8-14 in. flowers
- Yields a generous seed crop
- Grows 9-12 ft. tall
Product Description
This sunflower is called mammoth for a reason! The huge flowers grow 8-14 inches across (some have reached 20 inches!) and yield a generous crop of seeds. High oil content gives these seeds a great roasted flavor. An open-pollinated, heirloom variety, Mammoth Gray Stripe Sunflower is one of the largest sunflower varieties available. It grows 9-12 feet tall and is a favorite for planting along fences or near buildings. Bees and birds love to visit the sunny yellow flowers. 100 days to maturity.
Product Details
- Botanical Name: Helianthus annuus 'Mammoth Gray Stripe'
- Season: both Spring & Fall
- Sun/Shade: Full Sun
- Height: 9 - 12 Feet
- Spacing: 2 - 4 feet.
- Zone: 3-9
- Spread: 15 - 24 inches.
- Color:Orange-yellow.
- Foliage:Very rough; to 1 foot long heart-shaped green leaves.
- Depth:1 inch.
- Blooms:Mid Summer, Late Summer, Fall
- Germination: 10 - 14 days at 68 - 86 degrees F.
- Days to Maturity: 42 Days
- Fruit: Smooth ivory flesh with delicate flavor.
- Soil Preference: Dry Soil
- Growth Rate: Moderate growth rate.
- Form: Annual, sunflower.
- Flowers: Bright yellow flowers up to 20 inches in diameter.
- Seed Count: Approximately 300 seeds per ounce. 1/4 lb. is approximately 1200 seeds. Sold by weight.
- Size: 1 Oz
Shipping Information
Orders for in-stock seeds and hardgoods are typically shipped within 5 business days.
Plants will be shipped at the proper planting time for your area of the country during the shipping timeframes outlined below:
| Spring 2023 Shipping Schedule | |||
| Zones | Sweet Potatoes | Potatoes | Tomatoes & Peppers |
| 1A-4A | 5/15/23 - 6/2/23 | 3/27/23 - 6/9/23 | 5/22/23 - 6/2/23 |
| 4B | 5/15/23 - 6/2/23 | 3/27/23 - 6/9/23 | 5/22/23 - 6/2/23 |
| 5A | 5/8/23 - 6/2/23 | 3/13/23 - 6/9/23 | 5/15/23 - 6/2/23 |
| 5B | 4/24/23 - 6/2/23 | 3/13/23 - 6/9/23 | 5/15/23 - 6/2/23 |
| 6A | 4/24/23 - 6/2/23 | 3/13/23 - 6/9/23 | 5/8/23 - 6/2/23 |
| 6B | 4/24/23 - 6/2/23 | 2/27/23 - 6/9/23 | 5/8/23 - 6/2/23 |
| 7A | 4/24/23 - 6/2/23 | 2/23/23 - 6/9/23 | 4/17/23 - 6/2/23 |
| 7B | 4/24/23 - 6/2/23 | 2/20/23 - 6/9/23 | 4/17/23 - 6/2/23 |
| 8A | 4/17/23 - 6/2/23 | 2/16/23 - 6/9/23 | 4/10/23 - 6/2/23 |
| 8B | 4/17/23 - 6/2/23 | 2/13/23 - 6/9/23 | 4/10/23 - 6/2/23 |
| 9A & B | 4/17/23 - 6/2/23 | 2/6/23 - 6/9/23 | 4/10/23 - 6/2/23 |
| 10A & B | 4/10/23 - 6/2/23 | 2/6/23 - 6/9/23 | 4/10/23 - 6/2/23 |
| Last Order Date | 5/29/2023 | 6/5/2023 | 5/29/2023 |
| Spring 2023 Shipping Schedule | |||
| Zones | Tender Annuals | Fruit Trees | Onion Plants |
| 1A-4A | 5/5/23 - 6/2/23 | 3/27/23 - 6/2/23 | 4/3/23 - 5/5/23 |
| 4B | 5/5/23 - 6/2/23 | 3/27/23 - 6/2/23 | 3/27/23 - 5/5/23 |
| 5A | 5/5/23 - 6/2/23 | 3/13/23 - 6/2/23 | 3/20/23 - 5/5/23 |
| 5B | 5/1/23 - 6/2/23 | 2/27/23 - 6/2/23 | 3/20/23 - 5/5/23 |
| 6A | 4/27/23 - 6/2/23 | 2/27/23 - 6/2/23 | 2/27/23 - 5/5/23 |
| 6B | 4/24/23 - 6/2/23 | 2/27/23 - 6/2/23 | 2/20/23 - 5/5/23 |
| 7A | 4/13/23 - 6/2/23 | 2/6/23 - 6/2/23 | 2/13/23 - 5/5/23 |
| 7B | 4/10/23 - 6/2/23 | 2/6/23 - 6/2/23 | 2/6/23 - 5/5/23 |
| 8A & B | 4/3/23 - 6/2/23 | 2/6/23 - 5/12/23 | 1/23/23 - 5/5/23 |
| 9A & B | 3/27/23 - 6/2/23 | 2/6/23 - 5/12/23 | 1/2/23 - 5/5/23 |
| 10A & B | 3/27/23 - 6/2/23 | 2/6/23 - 5/12/23 | 1/2/23 - 5/5/23 |
| Last Order Date | 5/29/2023 | 1A-6B: 5/29/2023 7A-7B: 5/19/2023 8A-10B: 5/8/2023 |
5/1/2023 |
| Spring 2023 Shipping Schedule | |||
| Zones | Bareroot Roses | All other Perennials & Potted Plants | Dormant Trees & Hedges |
| 1A-4A | 4/10/23 - 5/26/23 | 5/1/23 - 6/2/23 | 5/1/23 - 5/19/23 |
| 4B | 4/10/23 - 5/26/23 | 5/1/23 - 6/2/23 | 4/17/23 - 5/19/23 |
| 5A | 3/27/23 - 5/26/23 | 4/10/23 - 6/2/23 | 3/27/23 - 5/19/23 |
| 5B | 3/13/23 - 5/26/23 | 3/27/23 - 6/2/23 | 3/13/23 - 5/19/23 |
| 6A | 2/27/23 - 5/26/23 | 3/13/23 - 6/2/23 | 3/6/23 - 5/19/23 |
| 6B | 2/27/23 - 5/26/23 | 2/27/23 - 6/2/23 | 2/27/23 - 5/19/23 |
| 7A | 2/20/23 - 5/26/23 | 2/23/23 - 6/2/23 | 2/20/23 - 5/19/23 |
| 7B | 2/20/23 - 5/26/23 | 2/21/23 - 6/3/23 | 2/20/23 - 5/19/23 |
| 8A | 2/13/23 - 5/26/23 | 2/16/23 - 5/12/23 | 2/13/23 - 4/28/23 |
| 8B | 2/13/23 - 5/26/23 | 2/13/23 - 5/12/23 | 2/13/23 - 4/28/23 |
| 9A & B | 1/16/23 - 5/26/23 | 2/6/23 - 5/12/23 | 2/6/23 - 4/28/23 |
| 10A & B | 1/16/23 - 5/26/23 | 2/6/23 - 5/12/23 | 2/6/23 - 4/28/23 |
| Last Order Date | 5/22/2023 | 1A-7B: 5/29/2023 8A-10B: 5/8/2023 |
1A-7B: 5/15/2023 8A-10B: 4/24/2023 |
| Spring 2023 Shipping Schedule | |||
| Zones | Large Bareroots, Trees & Shrubs | Select Citrus | |
| 1A-3B | 5/1/23 - 6/2/23 | 4/17/23 - 10/27/23 | |
| 4A & B | 5/1/23 - 6/2/23 | 4/3/23 - 10/27/23 | |
| 5A | 4/10/23 - 6/2/23 | 3/27/23 - 10/27/23 | |
| 5B | 3/27/23 - 6/2/23 | 3/27/23 - 10/27/23 | |
| 6A | 3/13/23 - 6/2/23 | 3/13/23 - 10/27/23 | |
| 6B | 2/27/23 - 6/2/23 | 3/13/23 - 10/27/23 | |
| 7A | 2/23/23 - 6/2/23 | 3/13/23 - 10/27/23 | |
| 7B | 2/20/23 - 6/2/23 | 3/13/23 - 10/27/23 | |
| 8A | 2/16/23 - 5/12/23 | 2/27/23 - 10/27/23 | |
| 8B | 2/13/23 - 5/12/23 | 2/27/23 - 10/27/23 | |
| 9A & B | 2/6/23 - 5/12/23 | 2/27/23 - 10/27/23 | |
| 10A & B | 2/6/23 - 5/12/23 | 2/27/23 - 10/27/23 | |
| Last Order Date | 1A-7B: 5/29/2023 8A-10B: 5/8/2023 |
10/23/2023 | |
| Spring 2023 Shipping Schedule | |||
| Zones | Nematodes | Encapsulated Compost Worms | |
| 1A - 2A | 5/8/23 - 10/27/23 | 5/8/23 - 10/27/23 | |
| 2B - 3B | 4/24/23 - 10/27/23 | 4/24/23 - 10/27/23 | |
| 4A - 6A | 4/10/23 - 10/27/23 | 4/10/23 - 10/27/23 | |
| 6B - 7A | 4/3/23 -10/27/23 | 4/3/23 -10/27/23 | |
| 7B - 8B | 3/6/23 - 10/27/23 | 3/6/23 - 10/27/23 | |
| 9A - 10B | 2/20/23 - 10/27/23 | 2/20/23 - 10/27/23 | |
| Last Order Date | 10/23/2023 | 10/23/2023 | |
| Fall 2022 Shipping Schedule | |||
| Zones | Blueberries | All Other Fruits | Perennials, Bulbs & Flowers |
| 1A-4B | 9/12/22 - 10/28/22 | 9/12/22 - 10/28/22 | 9/12/22 - 10/28/22 |
| 5A - 5B | 9/12/22 - 10/28/22 | 9/12/22 - 10/28/22 | 9/12/22 - 10/28/22 |
| 6A - 6B | 9/26/22 - 10/28/22 | 9/26/22 - 10/28/22 | 9/26/22 - 10/28/22 |
| 7A - 7B | 9/26/22 - 10/28/22 | 9/26/22 - 10/28/22 | 9/26/22 - 10/28/22 |
| 8A - 8B | 9/26/22 - 10/28/22 | 9/26/22 - 10/28/22 | 9/26/22 - 10/28/22 |
| 9A - 10B | 9/26/22 - 10/28/22 | 9/26/22 - 10/28/22 | 9/26/22 - 10/28/22 |
| Last Order Date | All Grow Zones: Oct 24, 2022 |
All Grow Zones: Oct 24, 2022 |
All Grow Zones: Oct 24, 2022 |
| Fall 2022 Shipping Schedule | |||
| Zones | Vegetable Plants & Starts | Seeds | Hardgoods, Foods & Supplies |
| 1A-4B | 9/12/22 - 10/28/22 | 6/1/22 - 10/28/22 | 6/1/22 - 10/28/22 |
| 5A - 5B | 9/12/22 - 10/28/22 | 6/1/22 - 10/28/22 | 6/1/22 - 10/28/22 |
| 6A - 6B | 9/26/22 - 10/28/22 | 6/1/22 - 10/28/22 | 6/1/22 - 10/28/22 |
| 7A - 7B | 9/26/22 - 10/28/22 | 6/1/22 - 10/28/22 | 6/1/22 - 10/28/22 |
| 8A - 8B | 9/26/22 - 10/28/22 | 6/1/22 - 10/28/22 | 6/1/22 - 10/28/22 |
| 9A - 10B | 9/26/22 - 10/28/22 | 6/1/22 - 10/28/22 | 6/1/22 - 10/28/22 |
| Last Order Date | All Grow Zones: Oct 24, 2022 |
All Grow Zones: Oct 24, 2022 |
All Grow Zones: Oct 24, 2022 |
| Fall 2022 Shipping Schedule | |||
| Zones | Select Perennials, Hibiscus & Iris | Trees & Shrubs | Select Strawberries |
| 1A - 3B | 10/10/22 - 11/11/22 | 9/12/22 - 10/28/22 | 9/6/22 - 10/7/22 |
| 4A - 4B | 10/10/22 - 11/11/22 | 9/12/22 - 10/28/22 | 9/6/22 - 10/7/22 |
| 5A - 5B | 10/10/22 - 11/11/22 | 9/12/22 - 10/28/22 | 9/6/22 - 10/7/22 |
| 6A - 6B | 10/10/22 - 11/11/22 | 9/26/22 - 10/28/22 | 9/6/22 - 10/7/22 |
| 7A - 7B | 10/10/22 - 11/25/22 | 9/26/22 - 10/28/22 | 9/6/22 - 10/7/22 |
| 8A - 8B | 10/10/22 - 11/25/22 | 9/26/22 - 10/28/22 | 9/6/22 - 10/7/22 |
| 9A - 10B | 10/10/22 - 11/25/22 | 9/26/22 - 10/28/22 | 9/6/22 - 10/7/22 |
| Last Order Date | Zones 1A-6B: 11/7/22 Zones 7A-10B: 11/21/22 |
All Grow Zones: 10/24/2022 |
All Grow Zones: 10/03/2022 |
| Fall 2022 Shipping Schedule | |||
| Zones | Houseplants | ||
| 2A & B | 4/11/22 - 10/21/22 | ||
| 3A & B | 4/11/22 - 10/21/22 | ||
| 4A & B | 4/11/22 - 10/21/22 | ||
| 5A & B | 4/11/22 - 10/21/22 | ||
| 6A & B | 4/11/22 - 10/21/22 | ||
| 7A & B | 3/14/22 - 11/4/22 | ||
| 8A & B | 3/14/22 - 11/4/22 | ||
| 9A & B | 3/14/22 - 11/4/22 | ||
| 10A & B | 3/14/22 - 11/4/22 | ||
| 11A & B | 3/14/22 - 11/4/22 | ||
| Last Order Date | Zones 2A-6B: 10/17/22 Zones 7A-11B: 10/31/22 |
||
The type of product you order or the weather in our area or yours may affect the anticipated shipping schedule.
Trees and shrubs are kept in the nursery row until fully dormant for optimum stress protection.
In all cases, we choose the fastest, most efficient way to send your order--via the U.S. Postal Service or United Parcel Service. Large orders may be shipped in more than one package.
Please note that we cannot ship outside of the continental United States.
